Ms. Naima is 25.
(I used s for nasser and m for naima)
Set up equations.
2s - 5 = m
s + m = 40
m = 40 - s
m = m so...
40 - s = 2s - 5
Move like terms to same side
40 + 5 = 2s + s
45 = 3s
15 = s
Substitute s into an equation.
(15) + m = 40
m=40-15
m=25
since naima is represented by m, naima’s age is 25.